archlinux pacman helper

I don't always follow pacman updates output. I believe this behavior was the reason I was left with an unbootable system. Mainly because of a long time due change for /bin/systemd to be removed, /bin/init being the sole entry point for the bootloader to continue. Anyway, as for LFS (Linux From Scratch), logging things could help, so as for now I'll use :

pacman -Su | tee pacman.dash.Su.`date +%d%b%G_%H%M%S`.log

in order to be able to read useful information later on.